I wasn't calling it a mad man. I said upgrades/switch. I'd rather run a turbo plug, that is why I would be changing the head. I didn't expect any performance gains from it. I have a ton of turbo plugs and the extra parts to do it, so I don't think it's a waste of time or money.

Man that GRP has a mind of it's own. I just wasn't sure what it was. I picked it up used and the guy that owned it ran 30% I went to 20% since that is what I run. Wasn't sure if it was that. The plugs that I have been using were OS P3s. I read somewhere that using os plugs was a bad idea with GRPs. Since this was my first grp I didn't know that. The engine will run fine for a few days then it would act up another day with that crazy idle. I have no idea what it could be.